IP Library › Granted Patent US 529,937
Granted Patent S1
US 529,937 · App. 29/222,641 · Granted Oct 10, 2006

Heavy duty roof drill bit

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Quick Facts
Patent No.
US 529,937
App. No.
29/222,641
Granted
Oct 10, 2006
Kind
S1
Claims (1)

The ornamental design for a heavy duty roof drill bit, as shown and described.

Assignments (5)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jul 17, 2025
From: JPMORGAN CHASE BANK, N.A.
To: CHAMPIONX LLC; APERGY ESP SYSTEMS, LLC; APERGY BMCS ACQUISITION CORP; HARBISON-FISCHER, INC.; NORRIS RODS, INC.,; NORRIS RODS, INC.,; NORRISEAL-WELLMARK, INC.; PCS FERGUSON, INC.; QUARTZDYNE, INC.; US SYNTHETIC CORPORATION
Reel/Frame 072004/0019 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 25, 2018
From: DOVER BMCS ACQUISITION CORPORATION
To: APERGY BMCS ACQUISITION CORPORATION
Reel/Frame 047303/0956 →
SECURITY AGREEMENT Recorded May 9, 2018
From: APERGY (DELAWARE) FORMATION, INC.; APERGY BMCS ACQUISITION CORP.; APERGY ENERGY AUTOMATION, LLC; HARBISON-FISCHER, INC.; NORRISEAL-WELLMARK, INC.; PCS FERGUSON, INC.; QUARTZDYNE, INC.; SPIRIT GLOBAL ENERGY SOLUTIONS, INC.; US SYNTHETIC CORPORATION; WINDROCK, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 046117/0015 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 15, 2008
From: THE WILLIAM J. BRADY LIVING (OR LOVING) TRUST; BRADY, WILLIAM J; BRADY, SHERRY H
To: DOVER BMCS ACQUISITION CORP.
Reel/Frame 021838/0279 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2005
From: BRADY, WILLIAM J.
To: WILLIAM J. BRADY LOVING TRUST, THE
Reel/Frame 016259/0169 →